+-----+-----+-----+-----+-----+-----+-----+
|           "     "     |     "           |
|       -   "     "  8  |     "       -   |
|           "     "     |     "           |
+=====+=====+-----+=====+-----+=====+=====+
|     |     |     "     "     |     |     |
|     |     |     "     "     |     |     |
|     |     |     "     "     |     |     |
+-----+-----+-----+=====+-----+-----+=====+
|     |     |     |     "     |     "     |
|     |  2  |     |     "     |  7  "     |
|     |     |     |     "     |     "     |
+=====+=====+=====+=====+-----+=====+-----+
|     |     |     "     "     "     |     |
|     |     |     "     "     "     |     |
|     |     |     "     "     "     |     |
+-----+-----+=====+     +=====+-----+-----+
|     |     "     "     "     |     |     |
|     |     "     " -   "     |     |     |
|     |     "     "     "     |     |     |
+-----+-----+-----+=====+=====+-----+-----+
|     |     "     |     |     "     |     |
|  3  |  6  "     |     |     "  3  |  1  |
|     |     "     |     |     "     |     |
+=====+-----+-----+-----+-----+=====+=====+
|     "     "     |     |     |     "     |
|     "     "  1  |     |  5  |     "     |
|     "     "     |     |     |     "     |
+-----+-----+-----+-----+-----+-----+-----+